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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

N-Acetyl Iminostilbene chemical structure

N-Acetyl Iminostilbene

CAS: 19209-60-0
Formula: C₁₆H₁₃NO
MW: 235.28 g/mol

VQ-034849

Reference Standard

N-Acetyl Linaclotide chemical structure

N-Acetyl Linaclotide

CAS: 1422389-17-0
Formula: C₆₁H₈₁N₁₅O₂₂S₆
MW: 1568.8 g/mol

VQ-031557

Reference Standard

N-Acetyl Lorcaserin chemical structure

N-Acetyl Lorcaserin

CAS: 1181690-72-1
Formula: C₁₃H₁₆ClNO
MW: 237.72 g/mol

VQ-026505

Reference Standard

N-Acetyl Memantine chemical structure

N-Acetyl Memantine

CAS: 19982-07-1
Formula: C₁₄H₂₃NO
MW: 221.34 g/mol

VQ-023062

Reference Standard

N-Acetyl Oxcarbazepine Impurity chemical structure

N-Acetyl Oxcarbazepine Impurity

CAS: 28291-63-6
Formula: C₁₆H₁₃NO₂
MW: 251.28 g/mol

VQ-023431

Reference Standard

N-Acetyl Phentermine chemical structure

N-Acetyl Phentermine

CAS: 5531-33-9
Formula: C₁₂H₁₇NO
MW: 191.27 g/mol

VQ-032934

Reference Standard

N-Acetyl Phenylephrine chemical structure

N-Acetyl Phenylephrine

CAS: 58952-80-0
Formula: C₁₁H₁₅NO₃
MW: 209.24 g/mol

VQ-042028

Reference Standard

N-Acetyl Staurosporine chemical structure

N-Acetyl Staurosporine

CAS: 2173322-11-5
Formula: C₃₀H₂₈N₄O₄
MW: 508.6 g/mol

VQ-038398

Reference Standard

N-Acetyl Sulfapyridine chemical structure

N-Acetyl Sulfapyridine

CAS: 19077-98-6
Formula: C₁₃H₁₃N₃O₃S
MW: 291.33 g/mol

VQ-028148

Reference Standard

N-Acetyl Tizanidine chemical structure

N-Acetyl Tizanidine

CAS: 173532-15-5
Formula: C₁₁H₁₀ClN₅OS
MW: 295.75 g/mol

VQ-023908

Reference Standard

N-Acetyl Varenicline chemical structure

N-Acetyl Varenicline

CAS: 1213781-59-9
Formula: C₁₅H₁₅N₃O
MW: 253.3 g/mol

VQ-042830

Reference Standard

N-Acetyl Vasopressin chemical structure

N-Acetyl Vasopressin

CAS: 38106-69-3
Formula: C₄₈H₆₇N₁₅O₁₃S₂
MW: 1126.3 g/mol

VQ-023989

Reference Standard

N-Acetyl Venetoclax Impurity

N-Acetyl Venetoclax Impurity

CAS: 2573767-92-5
Formula: C₄₇H₅₂ClN₇O₈S
MW: 910.48 g/mol

VQ-005306

Reference Standard

N-Acetyl vortioxetine IMPURITY chemical structure

N-Acetyl vortioxetine IMPURITY

CAS: 1801352-86-2
Formula: C₂₀H₂₄N₂OS
MW: 340.5 g/mol

VQ-024031

Reference Standard

N-Acetyl Zonisamide chemical structure

N-Acetyl Zonisamide

CAS: 68936-43-6
Formula: C₁₀H₁₀N₂O₄S
MW: 254.26 g/mol

VQ-024062

Reference Standard

N-Acetyl-3-(2-naphthalenyl)-D-alanyl-4-chloro-D-phenylalanyl-3-(3-pyridinyl)-D-alanine chemical structure

N-Acetyl-3-(2-naphthalenyl)-D-alanyl-4-chloro-D-phenylalanyl-3-(3-pyridinyl)-D-alanine

CAS: 129225-22-5
Formula: C₃₂H₃₁ClN₄O₅
MW: 587.1 g/mol

VQ-030946

Reference Standard

N-Acetyl-3-sulfino-L-alanine chemical structure

N-Acetyl-3-sulfino-L-alanine

CAS: 282727-77-9
Formula: C₅H₉NO₅S
MW: 195.2 g/mol

VQ-034996

Reference Standard

N-Acetyl-D-Cysteine chemical structure

N-Acetyl-D-Cysteine

CAS: 26117-28-2
Formula: C₅H₉NO₃S
MW: 163.2 g/mol

VQ-029011

Reference Standard

N-Acetyl-D-Glutamine chemical structure

N-Acetyl-D-Glutamine

CAS: 161579-61-9
Formula: C₇H₁₂N₂O₄
MW: 188.18 g/mol

VQ-044813

Reference Standard

N-Acetyl-DL-homocysteine Thiolactone chemical structure

N-Acetyl-DL-homocysteine Thiolactone

CAS: 17896-21-8
Formula: C₆H₉NO₂S
MW: 159.21 g/mol

VQ-047811

Reference Standard

N-Acetyl-L-phenylalanine chemical structure

N-Acetyl-L-phenylalanine

CAS: 2018-61-3
Formula: C₁₁H₁₃NO₃
MW: 207.23 g/mol

VQ-024378

Reference Standard

N-Acetyl-L-Thyroxine Impurity chemical structure

N-Acetyl-L-Thyroxine Impurity

CAS: 26041-51-0
Formula: C₁₇H₁₃I₄NO₅
MW: 818.91 g/mol

VQ-005307

Reference Standard

N-Acetyl-L-Tryptophan chemical structure

N-Acetyl-L-Tryptophan

CAS: 1218-34-4
Formula: C₁₃H₁₄N₂O₃
MW: 246.26 g/mol

VQ-028557

Reference Standard

N-Acetyl-N-[2-(7-methoxy-1-naphthalenyl)ethyl]acetamide chemical structure

N-Acetyl-N-[2-(7-methoxy-1-naphthalenyl)ethyl]acetamide

CAS: 1379005-34-1
Formula: C₁₇H₁₉NO₃
MW: 285.34 g/mol

VQ-024169

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